# Saw: Chainsaw & Fuel Mix Calc — 2-stroke oil, files & chains

> 2-stroke oil, files & chains (iPhone/iPad app by Roman Kopaliani.)

- Source: https://appshunter.io/ios/app/saw-chainsaw-and-fuel-mix-calc/id6800843730 (this page in markdown: same URL + `.md`)
- Developer: [Roman Kopaliani](https://appshunter.io/developer/1635315269)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-08-20
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/saw-chainsaw-and-fuel-mix-calc/id6800843730/reviews.md

## What is Saw?

Pay once. No subscription, no ads, no account. Works offline.

Saw is the chainsaw companion. Mix 2-stroke fuel exactly, know which round file your chain takes before you ruin a cutter, and walk into the store with the three numbers that buy the right replacement chain — every figure cited to its source.

Free forever
• Fuel mix calculator — 50:1, 40:1, 32:1, 25:1 or custom, any tank size, in fluid ounces and millilitres (modern Stihl and Husqvarna equipment runs 50:1 — your manual is final)
• Fuel rules that save engines — never above 10% ethanol, never fuel older than ~30 days, per OPEI
• Chain & file chart — the right round file for 1/4", 3/8" low-profile, .325", 3/8" and .404" pitch, from Oregon file-guide sizing, plus angle and depth-gauge guidance
• Cut Safe — OSHA kickback, starting, and PPE rules, cited

Saw Pro — one-time unlock
• Chain ID — measure across three rivets and get your pitch; add gauge and drive-link count and you have exactly the chain to buy, first try
• Chain tracker — every chain you own: which saw it fits, its exact spec, and its sharpening log. Honest by design: a chain retires at the wear mark on its cutters — the count is a planning proxy, and the app says so.

Works for every 2-stroke you own: chainsaws, trimmers, blowers, outboards, dirt bikes — the mix math is the same.

For firewood cutters, rural homeowners, homesteaders, and storm-cleanup crews.

$6.99 one-time for Saw Pro. No subscription, no ads, no account.

Privacy: Saw collects nothing. No analytics, no accounts, no cloud. Your chains live on your device.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Saw Pro | $6.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-21

No release notes.

## More apps by Roman Kopaliani

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All apps by Roman Kopaliani: https://appshunter.io/developer/1635315269

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*